Computed attributes

Sometimes you need to just display some value that is not actually stored in database. You can use computed field or column for this:

$schema->compute('total', function ($model) { return $model->getTotal(); });

You can also specify a method on model class, so previous example can be implemented even so:

$schema->compute('total', 'getTotal');

Actually, Cruddy will guess that you need function getTotal for total attribute, so this can be further shorten to this:

$schema->compute('total');

Relations

If computed value relies on some related models, you can specify which relations should be eagerly loaded to avoid n+1 problem:

$schema->compute('bar')->eager([ 'bar', 'bar' ]);